Cs2In(I) M(III) X6 (M = Bi, Sb; X = ハロゲン) ダブルペロフスキート:結合密度機能理論と実験研究
Zewen Xiao1, Ke-Zhao Du2, Weiwei Meng1,3
1Department of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo , Toledo, Ohio 43606, United States.
Journal of the American Chemical Society
|April 20, 2017
まとめ
Cs2InBiCl6のようなダブルBカチオンハリドペロブスキットは太陽電池にとって有望ですが,本質的に不安定です. この研究は酸化する傾向を明らかにし,新しい電子材料のリドックス化学を考慮する必要性を強調しています.
科学分野:
- 材料科学
- 固体化学
- 太陽光発電
背景:
- 鉛ハリドペロブスキットは毒性と不安定性の課題に直面しています.
- ダブルBカチオンハリドペロブスキットは潜在的な代替品です.
- In ((I) ベースのCs2InBiCl6とCs2InSbCl6は,有利な計算された特性により,有望な光伏材料として提案されました.
研究 の 目的:
- In (I) 基の二重ペロブスキート (Cs2In (I) M (III) X6,M=Bi,Sb;X=ハロゲン) の固有の安定性を調査する.
- 薄膜光伏吸収材料としての適性を評価する.
主な方法:
- 密度関数理論 (DFT) の計算
- 実験的な研究です
主要な成果:
- Cs2In(I) M(III) X6の二重ペロブスキットは本質的に不安定である.
- これらの化合物は酸化傾向があり,In (III) 基化合物を形成する.
- この研究は,材料の安定性予測における還元-酸化 (レドックス) 化学の重要な役割を強調しています.
結論:
- In ((I) ベースのダブルペロブスキットは,光伏の用途では安定していません.
- 新しい電子材料の安定性を予測するには,特に一般的でない酸化状態については,酸化還元化学を慎重に検討する必要があります.
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